Feed-chute for separators for ore, coal, &amp; c.



No. 638,062. Patented Nov. ,28, |899. F. PAnnEE. l

FEED CHUTE FUR SEPARATOBS FOB' DRE. GOAL&.c. (Application led June 14, 1899.)

(No Model.)

UNITED STATES PATENT OFFICE.

FRANK PARDEE, OF HAZLETON, PENNSYLVANIA.

FEED-CHUTE FOR SEPARATORS FOR ORE, COAL, SLC.

SPECIFICATION forming part of Letters Patent No. 638,062, dated November 28, 1899.

Application filed Idil@ 14, i899.` serial No. 720,491. (No model.)

To ct'ZZ w'to'n't it may concern:

y Be it known that-I, FRANK PAEDEE, a citizen of the United States, and a resident of Hazleton, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Feed-Chutes for Separators for Ore, Ooal, the., of which the following is a specification.

My invention relates to spiral separators for the assortment or separation of coal and slate or other mixed substances differing in specific gravity and frictional resistance, which are subjected to centrifugal action by being passed along the floor of a spiral separator.

The principal object of the invention is to deliver the mixed substances coming from some source of supply to several spiral ways or floors; and to this end I provide a feedchute of peculiar construction, as hereinafter more fully described, and pointed out in the claims.

In the drawings, Figure l is a vertical section of the upper part of a spiral separator, shown as constructed around a central column and having a three-way feed-chute attached to the end of the main-supply chute. Fig. 2 is a left-side perspective view of the three-way feed-chute and the lower part of the main chute, while Fig. 3 is a right-side perspective View of the same. Fig. a is a plan view thereof, and Fig. 5 a cross-section taken on the line @c @cof Fig. 4E. Fig. 6 shows a form of hanger or strap that may be used to support the several branches of the feedchute, as shownin Fig. l.

The machine-with which the feed-chute is designed to be used is provided with several spiral ways, as A, B, and O, secured to a central supporting-column D, and there may or may not be one or more larger spirals, as E, to take whatever substances pass over the edge of the smaller spirals; but the particular construction of the spirals is immaterial, so long as they are adapted to cause a separation of' the substances by gravitation, centrifugal action, and frictional resistance.

The main chute a, which is properly supported, as at b, brings the substances to be separated-as, for example, mixed coal and slate-which in a coal-breaker would pass from the sizer to the chute a and thence to the separator. The end of the main chute a does not, however, extend to the spirals, but is provided with a continuation in the nature of a bridge plate or slide c, of less width but on the same incline. The slide c connects with a short chute d and takes the substances passing thereon to the spiral A, on which they receive a centrifugal impetus and are separated before leaving the machine. The slide c is shown as being centrally disposed with `respect to the end of the main chute a, so as to provide lateral communication with two other chutes leading to the spirals B and C. For this purpose at the end of the main chute a on each side of the slide c there are laterally-disposed inclines c and f, which guide the mixed substances passing off of the main 'chute and not caught by the bridge plate or slide to chutes g and h, which lead, respectively, to the second and third spirals. The incline c guides the materials to the chute g, the entrance to which is shown by the leftside perspective, Fig. 2, the saine being made to project out beyond the side of' the chute CZ and is formed with a turned-up edge or flange v), which is inclined so as to turn the substance into the chute g, which is directly beneath the chute d. The right side of this chute g has an upturned fange or edgej, and the discharge end is below that of the chute d. The material passing from the main chute to the incline c is guided, as already explained, to the chute g, along which it passes to the spiral B of the separator, as shown in Fig. l.

The incline f on the right side of the end of the main chute` guides the substances to the entrance of the chute h, which has an upturned outer flange Z, similar to the flange t' of the entrance to the chute g, and the other edge m of the chute 7L is straight, like the edge j of the chute g. The discharge ends of the several chutes are practically in vertical alinement, the chute h leading to the spiral O, as shown in Fig. 1.

The chutes g and h may be closed at their upper ends by being fastened to a supportingblock fn, secured at the lower end of the main chute a, and the lower ends or bodies of the several feed-chutes d, g, and z are preferably supported by a hanger or strap o, one form of which is shown by Fig. 6; but the way in which the chutes are supported is immate- ICO rial, and the details of construction may be varied in this and other particulars.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A feed-chute for spiral separators, comprising two inclined main chutes and a bridgeplate connecting the inner ends of said chutes and formed with a laterally-extendingincline, and a lower chute arranged under the main chutes on a plane substantially parallel there- With, and formed with a laterally-projecting wing to receive and direct the material discharged from the lateral incline of the bridgeplate into the lower chute, substantially as described.

2. A feed-chute for spiral separators, comprising two inclined main chutes and a bridgeplate connecting the inner ends of said chutes and formed with oppositelyextending` inclines, a second chute arranged under the main chutes on a plane substantially parallel therewith,and formed with a laterally-projecting Wing to receive and direct the material discharged from one of the lateral inclines of the bridge-plate into the lower chute, and a third chute under the second chute formed with a laterally-extending wing arranged to receive and direct material discharged from the other lateral incline of the bridge-plate into the lowermost chute, substantially as described.

FRANK PARDEE. Witnesses:

WALTER B. TODD, B. FRANK MEAD. 

